This effect is based on prior work of Matin Lotfaliei and Rob, authors of the KDE-Rounded-Corners effect, Kevinlekiller author of kwin-effect-shaders. Special thanks to Patricio Gonzalez Vivo for his daltonize shader of Lygia.
The main idea is to manipulate pixel colors with a shader for helping in color-blindness related issues.
The configuration is pretty simple, only choose the desired color correction.
You need to install development packages for your distribution first:
Debian based (LliureX, Ubuntu, Kubuntu, KDE Neon)
- Plasma 5 - by alex47:
sudo apt install git cmake g++ extra-cmake-modules kwin-dev libkf5configwidgets-dev
- Plasma 6
sudo apt install git cmake g++ extra-cmake-modules kwin-dev qt6-base-dev-tools kf6-kcmutils-dev
Fedora
- Plasma 5 (Fedora 39)
sudo dnf install git cmake gcc-c++ extra-cmake-modules kwin-devel kf5-kconfigwidgets-devel libepoxy-devel
- Plasma 6 (Fedora 40 and later)
sudo dnf install git cmake gcc-c++ extra-cmake-modules kwin-devel kf6-kconfigwidgets-devel libepoxy-devel kf6-kcmutils-devel qt6-qtbase-private-devel wayland-devel
Arch - by https://github.com/hexa-one
sudo pacman -S git cmake extra-cmake-modules base-devel
yay -S qt5-tools
or AUR package by xiota
sudo pamac build kwin-effect-rounded-corners-git
OpenSUSE - by https://github.com/mathiasgredal and https://github.com/Richardsause
sudo zypper install git cmake gcc-c++ extra-cmake-modules libqt5-qttools-devel kconfigwidgets-devel kwindowsystem-devel kguiaddons-devel ki18n-devel knotifications-devel kwin5-devel libQt5Gui-devel libQt5OpenGL-devel libepoxy-devel libqt5-qtnetworkauth-devel
Void - by https://github.com/lay-by
xbps-install git cmake make qt5-tools-devel extra-cmake-modules gettext-devel kwin-devel
NixOS - by https://github.com/flexagoon
nix-env -iA nixos.kde-rounded-corners
Then clone the source code and compile it:
git clone https://github.com/lliurex/kwin-colorcorrection-effect
cd kwin-colorcorrection-effect
mkdir build
cd build
cmake .. --install-prefix /usr
make
sudo make install
To activate the effect, you can now log out and log back in, or run the command below inside the build
directory:
sh ../tools/load.sh
To fully uninstall the effect, run the following commands inside the build
directory:
sh ../tools/unload.sh
sudo make uninstall
After each kwin
package update, the effect becomes incompatible. So it won't load without a rebuild.
You can automate the re-installation by running the command
below inside the build
directory:
sh ../tools/install-autorun-test.sh
The command above adds a desktop
file inside the autorun
directory which checks if the effect is still supported,
if it is not supported, it will automatically rebuild and reinstall the effect.
You can change the color correction, or disable the effect in:
[ System Settings ] --> [ Workspace Behavior ] --> [ Desktop Effects ] --> [ Color Correction Filters ]
RGB wheel without color correction
RGB wheel with protanopia_2 filter
RGB wheel with deuteranopia_3 filter
RGB wheel with tritanopia_1 filter and error correction enabled